Evaluation of Mosquito Control Strategies in a Southern California Constructed Treatment Wetland PDF Download

Author: Joshua Allen Jiannino
Publisher:
ISBN:
Category : Mosquitoes
Languages : en
Pages : 168

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Author:
Publisher: UCANR Publications
ISBN: 1601072961
Category :
Languages : en
Pages : 11

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Book Description
Constructed wetlands can provide many economic and environmental benefits, but due care must be taken to prevent mosquito infestations.

Author: Eric Benjamin Schlossberg
Publisher:
ISBN:
Category :
Languages : en
Pages : 200

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Author: M. E. Sarhan
Publisher:
ISBN:
Category : Mosquitoes
Languages : en
Pages : 118

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Extract: A simultaneous equation model of the behavior of a mosquito abatement district based on biological and economic data is presented. Results indicate high long term costs if heavy reliance on chemical pesticide control methods continues, due to a pesticide resistance buildup in the mosquito populations. Physical source reduction methods were shown to be more efficient both in the short and long run. A linear programming model is presented which optimizes the mix of chemical and physical control methods. Results indicate increasing costs of mosquito abatement as pesticide effectiveness declines. Simulation results of narrow spectrum pesticide manufacturing firms indicate negative returns to research, development and marketing for most firms even with significant subsidies.

Author: Michelle Renee Sanford
Publisher:
ISBN:
Category : Anopheles
Languages : en
Pages : 292

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Author:
Publisher: UCANR Publications
ISBN: 1601073046
Category :
Languages : en
Pages : 11

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When you retain storm-generated drainwater to remove pollutants before releasing it into natural waterways, you can easily create an ideal mosquito-breeding habitat. This publication tells how to treat drainwater and still prevent mosquito infestations.

Author: Mosquito and Vector Control Association of California. Conference
Publisher:
ISBN:
Category : Mosquitoes
Languages : en
Pages : 152

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Author: California Mosquito Control Association
Publisher:
ISBN:
Category :
Languages : en
Pages : 740

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Author: Mu. Ramkumar
Publisher: Springer
ISBN: 3319134256
Category : Science
Languages : en
Pages : 753

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Book Description
This book offers a unique collection of inter- and multidisciplinary studies on river systems. Rivers have been the prime source of sustenance since the advent of civilization and river systems often form the basis for agriculture, transport, water, and land for domestic, commercial, and industrial activities, fostering economic prosperity. A river basin is a basic geographical and climatological unit within which the vagaries of natural processes act and manifest themselves at different spatio-temporal scales. Even if compared side-by-side, no two river basins respond to natural processes in the same way and thus, it has long been recognized that each river basin is unique. Hence, any developmental activity or conservation effort has to be designed and implemented to match each unique river basin. With the burgeoning population and increasing dependency on natural resources, understanding and maintaining river systems has become increasingly important. This book provides a varied reference work on and unprecedented guidelines for conducting and implementing research on river basins, and for managing their ecological development.

Author: Dagne Duguma Demisse
Publisher:
ISBN: 9781303711244
Category : Bacillus thuringiensis
Languages : en
Pages : 171

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Mosquito management in wetlands is complex partly because some of the wetland management operations are known to enhance mosquito production. I aimed to describe the effects of nutrients and integrated mosquito management strategies on mosquitoes produced in wetlands in the following three studies. First, we evaluated the growth characteristics of alkali bulrush (Schoenoplectus maritimus), an alternative aquatic plant of potential bioremediation importance, and its associated mosquito production across a gradient of nitrogen enrichment including the high ammonium nitrogen regimens typically found in constructed wetlands. Mosquito larvae abundance, dominated by the western encephalitis mosquito ( Culex tarsalis Coquillett), was significantly greater in enriched versus unenriched mesocosms. Alkali bulrush survived high nitrogen loadings, but its biomass was significantly suppressed at high (>50 mg/liter) ammonium nitrogen concentration in the water. Second, we characterized microbiota associated with C. tarsalis larvae, water column and epibionts of two (alkali and California) bulrushes using 16S rRNA gene sequences generated with Illumina sequencing platform. The diversity of microbiota in mosquitoes sampled from wetlands containing the two bulrushes did not differ appreciably, and was chiefly dominated by Thorsellia (Gammaproteobacteria ). The epibionts of the bulrushes and bacterioplankton were dominated by members of Actinobacteria, Bacteroidetes, Cyanobacteria, Proteobacteria and Verrucomicrobia. Overall, nearly 49% of the Bacteria taxa found in the mosquito gut were also found in the habitat, suggesting a strong Culex larvae-Bacteria interaction. Finally, we evaluated the effects of a one-time application of two rates of a key mosquito biopesticide, Bacillus thuringiensis subsp. israelensis (a granular form of VectoBac G) on native microbiota and physicochemical variables in the feeding zone of Culex larvae in experimental mesocosms. Beta diversity of Bacteria communities revealed that samples from low Bti and untreated control mesocosms were significantly separated from high Bti mesocosms and were dominated by unidentified OTU of Cyanobacteria, Cytophagales and Cyclobacteriaceae (Bacteroidetes), and Sphingomonas (Alphaproteobacteria ). Phytoplankton (chlorophyll a), sestonic particulates, nutrients, pH and other physicochemical variables in the water column were also significantly reduced in the high Bti mesocosms. Important implications of the results of these studies on integrated mosquito management in aquatic ecosystems are discussed.